Pre-Younger Dryas megafaunal extirpation at Rancho La Brea linked to fire-driven state shift
The cause, or causes, of the Pleistocene megafaunal extinctions have been difficult to establish, in part because poor spatiotemporal resolution in the fossil record hinders alignment of species disappearances with archeological and environmental data. We obtained 172 new radiocarbon dates on megafauna from Rancho La Brea in California spanning 15.6 to 10.0 thousand calendar years before present (ka). Seven species of extinct megafauna disappeared by 12.9 ka, before the onset of the Younger Dryas. Comparison with high-resolution regional datasets revealed that these disappearances coincided with an ecological state shift that followed aridification and vegetation changes during the Bølling-Allerød (14.69 to 12.89 ka). Time-series modeling implicates large-scale fires as the primary cause of the extirpations, and the catalyst of this state shift may have been mounting human impacts in a drying, warming, and increasingly fire-prone ecosystem.
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2023 |
|---|---|
| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:381 |
|---|---|
| Enthalten in: |
Science (New York, N.Y.) - 381(2023), 6659 vom: 18. Aug., Seite eabo3594 |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
O'Keefe, F Robin [VerfasserIn] |
|---|
| Links: |
|---|
| Themen: |
|---|
| Anmerkungen: |
Date Completed 21.08.2023 Date Revised 22.09.2023 published: Print-Electronic Citation Status MEDLINE |
|---|
| doi: |
10.1126/science.abo3594 |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
NLM360895174 |
|---|
| LEADER | 01000naa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM360895174 | ||
| 003 | DE-627 | ||
| 005 | 20231226084005.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 231226s2023 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1126/science.abo3594 |2 doi | |
| 028 | 5 | 2 | |a pubmed24n1202.xml |
| 035 | |a (DE-627)NLM360895174 | ||
| 035 | |a (NLM)37590347 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a O'Keefe, F Robin |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Pre-Younger Dryas megafaunal extirpation at Rancho La Brea linked to fire-driven state shift |
| 264 | 1 | |c 2023 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ƒaComputermedien |b c |2 rdamedia | ||
| 338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Date Completed 21.08.2023 | ||
| 500 | |a Date Revised 22.09.2023 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a The cause, or causes, of the Pleistocene megafaunal extinctions have been difficult to establish, in part because poor spatiotemporal resolution in the fossil record hinders alignment of species disappearances with archeological and environmental data. We obtained 172 new radiocarbon dates on megafauna from Rancho La Brea in California spanning 15.6 to 10.0 thousand calendar years before present (ka). Seven species of extinct megafauna disappeared by 12.9 ka, before the onset of the Younger Dryas. Comparison with high-resolution regional datasets revealed that these disappearances coincided with an ecological state shift that followed aridification and vegetation changes during the Bølling-Allerød (14.69 to 12.89 ka). Time-series modeling implicates large-scale fires as the primary cause of the extirpations, and the catalyst of this state shift may have been mounting human impacts in a drying, warming, and increasingly fire-prone ecosystem | ||
| 650 | 4 | |a Journal Article | |
| 700 | 1 | |a Dunn, Regan E |e verfasserin |4 aut | |
| 700 | 1 | |a Weitzel, Elic M |e verfasserin |4 aut | |
| 700 | 1 | |a Waters, Michael R |e verfasserin |4 aut | |
| 700 | 1 | |a Martinez, Lisa N |e verfasserin |4 aut | |
| 700 | 1 | |a Binder, Wendy J |e verfasserin |4 aut | |
| 700 | 1 | |a Southon, John R |e verfasserin |4 aut | |
| 700 | 1 | |a Cohen, Joshua E |e verfasserin |4 aut | |
| 700 | 1 | |a Meachen, Julie A |e verfasserin |4 aut | |
| 700 | 1 | |a DeSantis, Larisa R G |e verfasserin |4 aut | |
| 700 | 1 | |a Kirby, Matthew E |e verfasserin |4 aut | |
| 700 | 1 | |a Ghezzo, Elena |e verfasserin |4 aut | |
| 700 | 1 | |a Coltrain, Joan B |e verfasserin |4 aut | |
| 700 | 1 | |a Fuller, Benjamin T |e verfasserin |4 aut | |
| 700 | 1 | |a Farrell, Aisling B |e verfasserin |4 aut | |
| 700 | 1 | |a Takeuchi, Gary T |e verfasserin |4 aut | |
| 700 | 1 | |a MacDonald, Glen |e verfasserin |4 aut | |
| 700 | 1 | |a Davis, Edward B |e verfasserin |4 aut | |
| 700 | 1 | |a Lindsey, Emily L |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Science (New York, N.Y.) |d 1880 |g 381(2023), 6659 vom: 18. Aug., Seite eabo3594 |w (DE-627)NLM000023450 |x 1095-9203 |7 nnns |
| 773 | 1 | 8 | |g volume:381 |g year:2023 |g number:6659 |g day:18 |g month:08 |g pages:eabo3594 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1126/science.abo3594 |3 Volltext |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 381 |j 2023 |e 6659 |b 18 |c 08 |h eabo3594 | ||